Electric radiant heater



FIG. 1 is a front elevational view of an electric radiant heater, showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof; and

FIG. 5 is a top plan view thereof.

The bottom surface of the electric radiant heater is substantially planar and unornamental. 

The ornamental design for an electric radiant heater, substantially as shown and described. 